Polyurethane resins

ABSTRACT

POLYURETHANE RESINS FORMED BY REACTING AN ORGANIC POLYISOCYANATE AND AN ALKOXYLATED STARCH HYDROLYSATE PREPARED BY ALKOXYLATING A STARCH HYDROLYSATE CONTAINING AT LEAST ONE REDUCING SACCHARIDE. THE RESINS MAY BE USED AS COATINGS OR FOAMS, EITHER OF THE FLEXIBLE OR RIGID TYPE, AS BINDERS IN THE FOUNDRY PROCESS OF MAKING CORES OR MOLDS, OR FOR OTHER USES. ALSO A METHOD OF PREPARING THE ABOVE POLYURETHANES.



